Safety valve generally used on high pressure boiler is
A.Dead weight type
B.Lever type
C.Combination lever and spring type
D.Spring type
E.None of the above
Category: Heat Engines Mcqs
Thermodynamic equilibrium is completely defined by the specifications of the
A.Internal energy
B.Enthalpy
C.Generalized displacements
D.All above together
E.None of the above
Ash content of a diesel fuel oil should not exceed
A.1%
B.0.50%
C.0.10%
D.0.05%
E.0.01%
In isochronous governors the speed drop is
A.Zero
B.10 percent
C.20 percent
D.50 percent
E.75 percent
The Apparatus used for the determination of calorific value of solid fuel is
A.Osrat’s apparatus
B.Bomb calorimeter
C.Releigh apparatus
D.Photo calorimeter
E.Bunsen’s apparatus
Highest useful compression ratio is the compression ratio at which
A.An engine can be safely operated
B.An engine gives maximum thermal efficiency
C.An engine operates smoothly
D.Detonation first becomes audible
E.None of the above
For the same peak pressure and heat input
A.Otto cycle is more efficient
B.Diesel cycle is more efficient
C.Both are equally efficient
A diesel engine is to be redesigned to improve the overload capacity. The design feature which will be influenced is
A.Size of fuel injection equipment
B.Lubrication
C.Air capacity of cylinder
D.Cooling water velocity
E.All of the above
The bottom ring on the piston is known as
A.Oil ring
B.Scrapper ring
C.Compression ring
D.Groove ring
E.Any of the above
To augment the thrust of jet propulsion units part of the fuel is burned in the exhaust. How does this fuel burn
A.Oxygen is also supplied along with fuel
B.Some chemicals rich in oxygen are mixed with fuel
C.Fuel finds oxygen from excess air supplied to engine
D.Fuel is never burned in exhaust pipe
